Tire pressure measuring device

Abstract

The utility model discloses a tire pressure measuring device, which belongs to the technical field of tire pressure measurement and comprises a three-way joint, a pressure measuring device and a valve core, the three-way joint comprises a first joint, a second joint and a third joint, the second joint is used for being connected with an inflator, the third joint is used for being communicated with an inner cavity of a tire, and the first joint is connected with a measuring interface of the pressure measuring device. And the valve core is mounted in the second joint. The pressure measuring device, the valve core and the tire inner cavity are communicated through the three-way connector, the tire pressure can be monitored in real time in the tire inflation, pressure maintaining and deflation processes, the inflation and deflation amount is adjusted according to the monitored pressure value, a measuring connector and an inflation connector do not need to be frequently disassembled and assembled, the tire pressure monitoring process and the tire pressure adjusting process are simpler, and the tire pressure monitoring efficiency is improved. And the air pressure monitoring function under various tire static test conditions can be realized, and the problem that the air pressure of the tire is reduced due to gas dissipation caused by interface switching can be avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to tire pressure measuring technical field, in particular to a tire pressure measuring device. BACKGROUND

[0002] In the tire static test process, with the change of tire load, environmental temperature and time course and other test conditions, the tire pressure will also change. When the influence of various test conditions on the tire pressure needs to be studied, the tire pressure needs to be monitored and measured.

[0003] In the measuring method known to the inventor, mainly after the completion of tire inflation in the valve, the pressure gauge with measuring interface is used to detect the inflation internal pressure of the tire, and whether the inflation internal pressure meets the provisions is judged. If the inflation internal pressure of the tire is too large or too small, the tire is deflated or inflated to adjust the internal pressure of the tire, but this method has the following shortcomings: one, the adjustment and measurement process is troublesome: the inflation interface and the measurement interface of the pressure gauge need to be switched constantly to achieve the purpose of measuring and adjusting the internal pressure; two, it will cause additional gas loss: some gas will be released every time the measurement is carried out, so that the tire pressure will drop a little. UTILITY MODEL CONTENT

[0004] The utility model discloses a kind of tire pressure measuring devices, and three-way joint can be communicated with pressure measuring device, valve core, tire inner cavity, tire inflation, pressure maintaining and deflation operation can be carried out simultaneously, tire pressure measurement is carried out, make tire pressure monitoring process and pressure regulating process more simple, and additional gas loss will not be caused due to measurement.

[0005] To achieve the above object, the utility model provides the following scheme: the utility model discloses a kind of tire pressure measuring devices, including three-way joint, pressure measuring device and valve core, the three-way joint includes first joint, second joint for being connected with inflator and third joint for being communicated with tire inner cavity, the first joint is connected with the measuring interface of the pressure measuring device, the valve core is installed in the second joint.

[0006] Preferably, the third joint is communicated with tire inner cavity by removing the tire valve of valve core.

[0007] Preferably, three-way channel is equipped in the three-way joint, and the three-way channel includes first channel, second channel and third channel, the first channel is connected with the first joint, the second channel is connected with the second joint, and the third channel is communicated with the third joint.

[0008] Preferably, the first joint is internally provided with a first joint threaded hole in communication with the first channel, and the outer wall of the measuring interface is provided with a measuring interface threaded section for connecting with the first joint threaded hole.

[0009] Preferably, the end of the first joint is provided with a stepped hole comprising a first stepped section and a second stepped section arranged in sequence from inside to outside, the first stepped section is in communication with the first joint threaded hole, and the second stepped section is used for placing a sealing washer, the diameter of the second stepped section is greater than that of the first stepped section, and the measuring interface is further provided with a diameter expansion portion for abutting against the end of the first joint, and the diameter of the diameter expansion portion is greater than that of the second stepped section.

[0010] Preferably, the first joint is further internally provided with a circular truncated cone hole, the large-diameter end of the circular truncated cone hole is in communication with the first stepped section, and the small-diameter end of the circular truncated cone hole is in communication with the first channel.

[0011] Preferably, the second joint is internally provided with a valve core mounting hole in communication with the second channel, and the valve core mounting hole is internally provided with a second joint internal thread, the outer wall of the valve core is provided with a valve core threaded section, and the second joint internal thread is used for threadedly connecting with the valve core threaded section.

[0012] Preferably, the outer wall of the second joint is provided with a second joint external thread.

[0013] Preferably, the third joint is internally provided with a third joint threaded hole in communication with the third channel, the outer wall of the tire valve is provided with a valve threaded section, the valve threaded section is connected with the third joint threaded hole, and the diameter of the third channel is smaller than that of the third joint threaded hole.

[0014] Preferably, the third joint is further internally provided with a sealing hole for placing a sealing washer, the third joint threaded hole is in communication with the third channel through the sealing hole, and the diameter of the sealing hole is greater than that of the third joint threaded hole.

[0015] The utility model discloses relative to prior art has obtained following technical effect:

[0016] In the tire pressure measuring device, the pressure measuring device, the valve core and the tire inner cavity are communicated through the tee joint, the tire pressure can be monitored in real time during the tire inflation, pressure maintaining and deflation process, the inflation and deflation amount is adjusted according to the monitored pressure value, the measuring interface and the inflation interface do not need to be frequently disassembled, the tire pressure monitoring process and the pressure regulating process are more simple, the pressure monitoring function under various tire static test conditions can be realized, the gas dissipation caused by switching the interface is avoided, and the problem that the tire pressure drops. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a cross-sectional view of the tire pressure measuring device in the embodiment;

[0019] Figure 2 This is a cross-sectional view of the tee connector in the tire pressure measuring device in the embodiment;

[0020] Figure 3 This is a schematic diagram of the pressure measuring device in the tire pressure measuring device in the embodiment;

[0021] Figure 4 This is a schematic diagram of the valve core structure in the embodiment;

[0022] Figure 5 This is a schematic diagram of the tire valve structure in the embodiment;

[0023] Figure 6 This is a top view of the tee connector in the embodiment;

[0024] Figure 7 This is a right view of the tee connector in the embodiment.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1. T-connector; 101. First channel; 102. Second channel; 103. Third channel; 104. Threaded hole of the first connector; 105. First stepped section; 106. Second stepped section; 107. Frustum hole; 108. Valve core mounting hole; 109. Internal thread of the second connector; 110. External thread of the second connector; 111. Sealing hole; 112. Threaded hole of the third connector;

[0027] 2. Pressure measuring device; 201. Measuring interface threaded section; 202. Expanded diameter section;

[0028] 3. Valve core; 301. Valve core thread section;

[0029] 4. Tire valve stem; 401. Valve stem thread section;

[0030] 5. Sealing gaskets. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] This embodiment provides a tire pressure measuring device, such as... Figures 1 to 7 As shown, the device includes a three-way connector 1, a pressure measuring device 2, and a valve core 3. The three-way connector 1 includes a first connector, a second connector, and a third connector. The measuring interface of the pressure measuring device 2 is connected to the first connector. The valve core 3 is installed inside the second connector, which is used to connect to an air inflator. The third connector is used to connect to the inner cavity of the tire. The pressure measuring device 2 can be a pressure transmitter, a pressure sensor, or a pressure gauge. By connecting the pressure measuring device 2, the valve core 3, and the inner cavity of the tire through the three-way connector 1, tire pressure can be monitored in real time during tire inflation, pressure holding, and deflation. The inflation and deflation amounts can be adjusted based on the monitored pressure values ​​without needing to switch between the inflation and measurement interfaces, simplifying the tire pressure monitoring process and preventing gas leakage and tire pressure drops caused by switching back and forth.

[0033] Working principle:

[0034] After connecting the third connector to the inner cavity of the tire.

[0035] During the inflation stage: Connect the second connector to the air pump, start the air pump, and inflate the tire cavity through the second and third connectors. At the same time, the pressure measuring device 2 on the first connector monitors the pressure inside the tire cavity in real time. The air volume of the air pump can be adjusted according to the pressure value until the pressure inside the tire cavity reaches the preset pressure. Because the inflation volume is adjusted in real time, this process ensures that inflation is completed in one step, without the need to deflate due to over-inflation, and without the need to switch back and forth between measurement and inflation for adjustment.

[0036] During the deflation stage: Disconnect the second connector from the air pump, open the valve core 3 to deflate. During the deflation process, the pressure inside the tire cavity is monitored in real time by the pressure measuring device 2 on the first connector. The deflation amount can be adjusted according to the pressure value. Because a three-way connector 1 is used, the pressure measuring device 2 does not need to be removed during the deflation process, so there will be no problem of gas escaping from the tire cavity and causing the tire pressure to drop.

[0037] In one implementation, such as Figures 1 to 7As shown, the third connector is connected to the tire cavity through the tire valve 4 with the valve core removed. Specifically, the tire valve 4 on the tire cavity is removed, and then the third connector is directly connected to the tire valve 4. Removing the valve core allows the three-way connector 1 to be effectively connected to the tire cavity, so that the pressure measuring device 2 can monitor the pressure value of the tire cavity in real time.

[0038] In one implementation, such as Figures 1 to 7 As shown, the pressure measuring device 2 can be a pressure transmitter. The pressure transmitter is electrically connected to the control equipment, and the control equipment is electrically connected to the air compressor. The monitored values ​​can be transmitted to the control equipment, and the control equipment can then control the air volume of the air compressor based on the monitored pressure values ​​to achieve automatic regulation.

[0039] In one implementation, such as Figures 1 to 7 As shown, the tee connector 1 has a tee channel, which includes a first channel 101, a second channel 102, and a third channel 103. The first channel 101 is connected to the first connector, the second channel 102 is connected to the second connector, and the third channel 103 is connected to the third connector. The three connectors are interconnected through the tee channel.

[0040] In one implementation, such as Figures 1 to 7 As shown, the tee connector 1 is a T-shaped tee, with the first and third connectors being main access connectors and the second connector being a branch access connector. That is, the first channel 101 and the third channel 103 are the main access channels, and the second channel 102 is the branch access channel. The coaxial arrangement of the first channel 101 and the third channel 103 facilitates smooth monitoring of the air pressure inside the tire cavity by the pressure measuring device 2. However, this does not mean that the tee connector 1 can only be a T-shaped tee; other shapes of tee connectors, such as Y-shaped tee connectors, can also be used as needed.

[0041] In one implementation, such as Figures 1 to 7 As shown, the first connector has a first connector threaded hole 104, which is coaxially connected to the first channel 101. The outer wall of the measuring interface of the pressure measuring device 2 has a measuring interface threaded section 201, which is used to connect with the first connector threaded hole 104. By screwing the measuring interface threaded section 201 of the measuring interface into the first connector threaded hole 104 of the first connector, the pressure measuring device 2 and the tee connector 1 can be connected.

[0042] In one implementation, such as Figures 1 to 7As shown, the end of the first connector is provided with a stepped hole, which includes a first stepped section 105 and a second stepped section 106, arranged sequentially from the inside to the outside. The first stepped section 105 is coaxially connected to the threaded hole 104 of the first connector, and the second stepped section 106 is used to place the sealing gasket 5. The diameter of the second stepped section 106 is larger than that of the first stepped section 105. The sealing gasket 5 is placed on the stepped surface of the second stepped section 106, that is, the end face of the first stepped section 105. The measuring interface of the pressure measuring device 2 is also provided with an enlarged diameter section 202, the diameter of which is larger than that of the second stepped section 106. The enlarged diameter section 202 is used to abut against the end of the first connector, which can limit the pressure measuring device 2 in the axial direction on the one hand, and press the sealing gasket 5 tightly on the stepped surface of the second stepped section 106 on the other hand, ensuring the sealing between the pressure measuring device 2 and the tee connector 1.

[0043] In one implementation, such as Figures 1 to 7 As shown, the first connector is also provided with a frustum hole 107. The large diameter end of the frustum hole 107 is coaxially connected to the first stepped section 105, and the small diameter end of the frustum hole 107 is coaxially connected to the first channel 101.

[0044] In one implementation, such as Figures 1 to 7 As shown, the second connector has a valve core mounting hole 108, which is coaxially connected to the second channel 102. The valve core mounting hole 108 has a second connector internal thread 109, and the outer wall of the valve core 3 has a valve core threaded section 301. The second connector internal thread 109 is used to connect with the valve core threaded section 301. By screwing the valve core threaded section 301 of the valve core 3 into the second connector internal thread 109 of the valve core mounting hole 108, the valve core 3 can be installed with the second connector.

[0045] In one implementation, such as Figures 1 to 7 As shown, the second connector is provided with a second connector external thread 110, which is used to connect with the air inlet of the air compressor.

[0046] In one implementation, such as Figures 1 to 7 As shown, the third connector has a threaded hole 112, which is coaxially connected to the third channel 103. The outer wall of the tire valve 4 has a valve thread section 401, which is used for threaded connection with the threaded hole 112 of the third connector. The diameter of the third channel 103 is smaller than that of the threaded hole 112. By inserting the tire valve 4 into the threaded hole 112 of the third connector and tightening the third connector, the threaded hole 112 and the threaded section 401 can be threaded together.

[0047] In one implementation, such as Figures 1 to 7As shown, the third connector also has a sealing hole 111 for placing another sealing washer 5. The threaded hole 112 of the third connector communicates with the third channel 103 through the sealing hole 111. The threaded hole 112, the sealing hole 111, and the third channel 103 are coaxially arranged. The diameter of the sealing hole 111 is larger than that of the threaded hole 112. During connection, the sealing washer 5 is first inserted into the sealing hole 111, and then the tire valve 4 is screwed in. The tire valve 4 will press the sealing washer 5 tightly against the bottom of the sealing hole 111, thereby achieving a sealed connection between the tire valve 4 and the tee connector 1.

[0048] In one implementation, such as Figures 1 to 7 Figures 1 to 7 Figures 1 to 7 Figures 1 to 7 As shown, the installation process of the tire pressure measuring device is as follows: Place one of the sealing washers 5 into the sealing hole 111 of the third connector, then screw the threaded hole 112 of the third connector onto the tire valve stem 4 until the valve stem presses against the sealing washer 5 and fits tightly. First, place the other sealing washer 5 onto the measuring interface of the pressure measuring device 2, then screw the threaded section 201 of the measuring interface of the pressure measuring device 2 into the threaded hole 104 of the first connector, until the enlarged diameter section 202 of the pressure measuring device 2 presses the sealing washer 5 against the stepped surface of the second stepped section 106; screw the valve core 3 into the valve core mounting hole 108 of the second connector, so that the threaded section 301 of the valve core is threadedly connected to the internal thread 109 of the second connector. The valve core 3 is equipped with a sealing element, which is pressed and sealed against the valve core mounting hole 108 by the sealing element. The disassembly process is as follows: the pressure testing device 2, valve core 3, tire valve 4 and three-way connector 1 are all threaded connections. Simply loosen the threads of each of the three. The disassembly order is not required. Then remove the sealing gasket 5.

[0049] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of ​​this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A tire pressure measuring device, characterized in that, The device includes a three-way connector, a pressure measuring device, and a valve core. The three-way connector includes a first connector, a second connector for connecting to an air compressor, and a third connector for communicating with the inner cavity of a tire. The first connector is connected to the measuring interface of the pressure measuring device, and the valve core is installed in the second connector. The tee connector has a tee channel, which includes a first channel, a second channel, and a third channel. The first channel is connected to the first connector, the second channel is connected to the second connector, and the third channel is connected to the third connector. The first connector has a first connector threaded hole, which communicates with the first channel. The outer wall of the measuring interface has a measuring interface threaded section, which is used to connect with the first connector threaded hole. The second connector has a valve core mounting hole, which communicates with the second channel. The valve core mounting hole has a second connector internal thread, and the outer wall of the valve core has a valve core thread section. The second connector internal thread is used to connect with the valve core thread section. The third connector is connected to the inner cavity of the tire via a tire valve stem with the valve core removed. The third connector has a threaded hole that is connected to the third channel. The outer wall of the tire valve stem has a valve stem threaded section that is connected to the threaded hole of the third connector. The diameter of the third channel is smaller than that of the threaded hole of the third connector.

2. The tire pressure measuring device according to claim 1, characterized in that, The end of the first connector is provided with a stepped hole, the stepped hole including a first stepped section and a second stepped section arranged sequentially from the inside to the outside. The first stepped section is connected to the threaded hole of the first connector, and the second stepped section is used to place a sealing gasket. The diameter of the second stepped section is larger than that of the first stepped section. The measuring interface is also provided with an enlarged diameter portion for abutting against the end of the first connector. The diameter of the enlarged diameter portion is larger than that of the second stepped section.

3. The tire pressure measuring device according to claim 2, characterized in that, The first connector is also provided with a frustum hole, the large-diameter end of which is connected to the first stepped section, and the small-diameter end of which is connected to the first channel.

4. The tire pressure measuring device according to claim 1, characterized in that, The outer wall of the second connector is provided with a second connector external thread.

5. The tire pressure measuring device according to claim 4, characterized in that, The third connector is also provided with a sealing hole for placing a sealing gasket. The threaded hole of the third connector communicates with the third channel through the sealing hole, and the diameter of the sealing hole is larger than that of the threaded hole of the third connector.

Images